RoHS stands for Restriction of Hazardous Substances. RoHS, also known as Directive 2002/95/EC, originated in the European Union and restricts the use of specific hazardous materials found in electrical and electronic products (known as EEE). All applicable products in the EU market after July 1, 2006 must pass RoHS compliance. The substances banned under RoHS are lead (Pb), mercury (Hg), cadmium (Cd), hexavalent chromium (CrVI), polybrominated biphenyls (PBB), polybrominated diphenyl ethers (PBDE), and four different phthalates (DEHP, BBP, BBP, DIBP). RoHS Viewsonic PJD5234, 2800 ANSI lumens, DLP, XGA (1024x768), 15000:1, 4:3, 24 - 300" Viewsonic PJD5234. Projector brightness: 2800 ANSI lumens, Projection technology: DLP, Projector native resolution: XGA (1024x768). Light source type: Lamp, Service life of light source: 5000 h, Service life of light source (economic mode): 6000 h. Throw ratio: 1.97 - 2.17:1. Analog signal format system: NTSC M, PAL 60, PAL B, PAL D, PAL G, PAL H, PAL I, PAL M, PAL N, SECAM B, SECAM D, SECAM G, SECAM..., Supported graphics resolutions: 1600 x 1200 (UXGA), Supported video modes: 1080i, 1080p, 480i, 480p, 576i, 576p, 720p. Serial interface type: RS-232, USB connector type: USB Type-B https://www.pcmag.com/reviews/viewsonic-pjd5234 The ViewSonic PJD5234%displayPrice% at %seller% provides a very good range of connectivity choices and decent image quality for a budget data projector. It's lightweight and portable. Though other projectors offer better image quality and higher brightnes... Low price. Portable. Reasonably bright. Good range of connectivity choices. Good lamp life. 3D ready. Feeble audio. Rainbow effect in video. Lacks carrying case The ViewSonic PJD5234 provides solid data image quality and a good range of connectivity choices for an XGA data projector....